I’ve never seen such a great show. Apple surprised me a lot with new features, especially with changes in iOS 8.

Thank you Apple for the new keyboard. I used to type big texts using SwiftKey app and its super-duper smart keyboard with quicktype suggestions. Now it will be available in every app by default.
…and you will be able to configure/extend your keyboard. Awesome!

HealthKit. Wow! Thank you! I will be able to remove tons of apps from my iPhone.

And, of course, new programming language Swift.

These are just 3 most major things for me. However, WWDC 2014 Keynote was like a 2 hour action movie. If you haven’t a chance to watch it I’d really recommend to do it.